Diamond Testing Tools: A Brief History and Review
Diamond testing tools have evolved. Learn how the latest devices compare when distinguishing lab-grown from natural diamonds.
Mineral Magnetism: The Forgotten Property
Although gemstone magnetism isn’t a commonly tested gemstone property, it may be useful for making quick separations outside the lab. By Richard…
Destructive Mineral Tests: Dye Testing
Minerals may be dyed to enhance their color. Distinguishing natural from enhanced stones is an essential skill for mineralogists. The…
Destructive Mineral Tests: Hot Point Testing
Hot point testing can determine if a gem or mineral is plastic imitation. It can also reveal if a stone is treated with wax or plastic. By Donald Clark,…
Mineralogy of Phyllosilicates and Tectosilicates
In this article, we will discuss phyllosilicates and tectosilicates. These silicate subclasses include minerals crucial for technology and…
Mineralogy of Cyclosilicates and Inosilicates
In this article, we will discuss cyclosilicates and inosilicates. These two silicate subclasses include such well-known minerals as beryls,…
Mineralogy of Silicates: Nesosilicates and Sorosilicates
Silicates are the largest mineral class, making up over 90% of the Earth’s crust and mantle. Statistically, you are more likely to encounter…
Mineralogy of Halides, Carbonates + Sulfates
Halides, carbonates, and sulfites are considered sedimentary minerals. In this article, you will learn about evaporites and how these three…
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